SS-TPT: Stability and Suitability-Guided Test-Time Prompt Tuning for Adversarially Robust Vision-Language Models

arXiv:2606.06943v1 Announce Type: cross Abstract: Vision-language models (VLMs) such as CLIP achieve strong zero-shot recognition but remain highly fragile under adversarial perturbations. Recent test-time adaptation defenses improve robustness by leveraging many augmented views, but this leads to impractical slowdown and a clear robustness-throughput trade-off. To address this challenge, we present Stability and Suitability-guided Test-time Prompt Tuning (SS-TPT), evaluating the quality of each augmented view via two complementary scores: (1) stability, measuring prediction invariance to weak
The continuous development and deployment of vision-language models necessitates robust defense mechanisms against adversarial attacks, which currently limit their real-world applicability.
Improving the adversarial robustness of VLMs is critical for their secure and reliable integration into sensitive applications, enhancing trust and accelerating adoption across industries.
This research introduces a method to improve VLM robustness without the typical associated slowdown, potentially enabling more practical and secure deployments of AI systems.
- · AI developers
- · Security-conscious industries
- · AI-powered vision systems
- · Adversarial attackers
- · Inefficient VLM defense methods
More secure and reliable vision-language models become available for enterprise and public use.
Reduced operational risks for AI deployments in critical infrastructure and decision-making systems.
The development of highly robust and efficient AI models could accelerate the broader adoption of AI agents in mission-critical roles, leading to new automation paradigms.
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Read at arXiv cs.AI